Vacuum carpet-sweeper



C. W. DAVIS.

VACUUM CARPET SWEEPER. APPLICATLON FILED MAYZB, (9n.

Patented Mar. 2, 1920.

WQQJM Mm WT STATS ATENT FFTGE.

CHARLES W. DAVIS, OF TORRINGTON, CONNECTICUT, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO THE TORRINGTON COMPANY, OF TORRINGTON, CONNECTICUT, A CORPO- RATION OF CONNECTICUT.

VACU'UIII CARPET-SWEEPER.

Specification of Letters Patent.

Patented Mar. 2, 1926.

Application filed May 28, 1917. Serial No. 171,544.

To all whom it may concern:

Be it known that 1, CHARLES W. DAVIS, a citizen of the United States, residing at Torrington, in the county of Litchfield, State of Connecticut, have invented certain new and useful Improvements in Vacuum Carpet-Sweepers, of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon.

My invention relates to improvements in vacuum cleaners of the hand type and particularly to that class known as the carpet sweeper hand type.

An object of the invention is to provide a combination machine, that is a vacuum cleaner of the carpet sweeper type, which has incorporated within its casing, rotating brushes and the usual dirt pans of a carpet sweeper, which carpet sweeper can be easily removed and laid aside, thus allowing the device to be used as a vacuum cleaner alone.

With these general objects stated the particular obj cct is to provide a frame carrying the rotary brush and its operating parts which can be readily attached to and detached from the casing of the vacuum sweeper and the invention consists more particularly in the manner of securing the frame which supports the brush or brushes to the casing, whereby it may be attached or detached with a minimum amount of labor and without the use of any tools.

In the accompanying drawings Figure 1 is a bottom plan view of the ordinary vacuum carpet sweeper showing my invention applied thereto;

Fig. 2 is a longitudinal vertical sectional view taken on the line 22 of Fig. 1; and

Fig. 3 is a perspective view of the latch for locking the frame to the sweeper and showing the several parts in their separated relation.

Referring now to the drawings, A represents a rectangular housing having at its rear end the shaft 1, upon which are mounted the friction drive wheels 2 and also carrying the cranks 3 having pitmen 4: connected to the bellows 5 which create a vacuum in the housing for drawing the dirt upwardly through the suction sleeve or shoe 6, the lower face of which is in a plane with the lower edges of the drive wheels 2, all of which is well understood and needs no further description. The sides of the housing extend below the suction chamber and extending across the space between the same are two transverse bars 8 and 9 spaced some distance below the suction chamber.

The brush carrying frame 10 is of a rectangular form having mounted therein, in the usual manner, the transverse shafts 11 and 12 carrying the rollers 18 and 14. Mounted in the frame between the rollers is the brush 16, having its shaft extending through the frame and carrying rollers 7 and 18 meshing with the rollers 13 and let and whereby the brush is rotated as is well understood.

The forward end of the frame 10 at its side is provided with the forwardly extend ing ears 19 and 520 which are turned outwardly as shown in Fig. l of the drawings. The cars are bifurcated as indicated at 21 the upper projection 22 thereof being shorter than the lower projection 23. W hen the opposed end is unclamped the frame can be rocked on the rod 9 to bring the opposite end down below the rod 8 so that the frame can be moved longitudinally for removal. The opposite end of the frame 10 is provided at its center with a plate 24 which is preferably made of a single sheet of metal looped in the center, thus forming the parallel portions 27 and 28 arranged at an angle to the plate 24 and leaving the laterally extending attaching ears 25 and 26.

The upper edges of the parallel portions are cut-away as indicated at 29 and 30 and adapted to receive the transverse bar 8. The central looped portion is provided with an opening through which loosely passes the screw-threaded rod 31 having a hook 32 at its inner end adapted to pass upwardly around the bar. On the threaded rod 31 on the outside of the plate is a thumb nut 33 which draws the rod outwardly and causes the hooked end thereof to tightly engage the rod and force the frame 10 forward to cause theears 19 and 20 to tightly engage the rod 9. The rod 8 is at the same time tightly held between the hook 32 and the end walls of the cutaway portions 29 and 30 whereby the brush frame is tightly held in the proper position in the cleaner frame. Extending transversely through the space between the portions 25 and 26 of the plate is a guide rod 3st which serves as a guide for the bar 31 and also strengthens the plate to prevent the buckling of the same, by the strain to which it would be subjected.

From the foregoing description it will be seen that by loosening the thumb nut 33 the rod can be moved inwardly bringing the hook 32 out of engagement with the bar 8,

which allows the frame to swing downwardly on the bar 9. The frame is then free to be moved longitudinally to bring the cars 19 and 20 out of engagement with bar 9 and the same can be removed for cleaning the roller or repairing any part thereof.

It is obvious that minor changes may be made in the details of construction and arrangement of parts without departing from the spirit of the invention, as set forth in the appended claims.

Having thus fully described my invention what I claim as new and desire to secure by Letters Patent is 1. A. carpet vacuum sweeper, comprising a frame having a vacuum chamber therein, two transverse bars carried by the frame below the vacuum chamber, a brush carrying frame having interlocking means with one of the bars and a lock carried by the opposite end of the brush frame engaging the other bar.

2. A carpet vacuum sweeper, comprising a frame having a vacuum chamber therein, two transverse bars carried by the frame below the chamber, a frame carrying a brush and its operating means below the chamber and having bifurcated cars at one end straddling one of said bars, a plate carried by the opposite end of the brush frame below the other bar, and means carried by the plate for locking-it to said bar.

3. A carpet vacuum sweeper comprising a frame having a vacuum chamber, a vacuum creating means, a shoe, and two transverse bars carried by the frame below said chamber intermediate the vacuum creating-means and the shoe, a frame carrying a brush and its operating means below the chamber, bifurcated ears carried by one end of the frame and straddling one of said bars, a plate carried by the opposite end of the brush frame below the other bar, and a hook carried by the plate and adapted to clamp the other bar to the plate.

A carpet vacuum sweeper comprising 'a frame having a vacuum chamber, a

vacuum creating means, a shoe, and two transverse bars carried by the frame below said chamber intermediate the vacuum creating means and the shoe, a frame carrying a brush and its operating means below the chamber, bifurcated ears carried by one end of the brush frame and straddling one of said bars, a plate secured to the'opposite end of the brush frame and formed of parallel walls having cut-away edges to receive the other bar, a screw threaded rod passing through the web conne ting the parallel walls and having a hooked end engaging the bar and clamping in the cut-away portion, and a thumb nut secured upon the rod on the outside of the web.

In testimony whereof, I afliX my signature in the presence of two witnesses.

CHARLES l/V. DAVIS.

Witnesses R. A. CLEVELAND, E. C. MURDICK. 

